Sierra de Beauvoir, Fuegian Andes [Beauvoir Fm] (Cretaceous to of Argentina)

Where: Argentina (54.5° S, 68.3° W: paleocoordinates 61.9° S, 44.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Beauvoir Formation, Late/Upper Albian to Late/Upper Albian (105.3 - 93.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Beauvoir Fm, which overlies and laterally grades into the Yahgan Fm (Tithonian-early Albian), and is regionally overlain by the Buen Suceso strata [Cenomanian and younger). AGE: Late Albian-basal Cenomanian. STRATIGRAPHIC POSITION: From unknown position within formation.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, black slate and lithified, gray tuff

• SPECIFIC LITHOLOGY: Homogeneous, massive to faintly laminated dark slates and gray tuffs, with scarce rhythmites of sandstones and mudstones. LITHIFICATION: Lithified, on the basis of facies description.

Size class: macrofossils

Reposited in the BMNH

Collection methods: surface (in situ),

• COLLECTOR: Not stated in text, but possibly either Macellari or Olivero. REPOSITORY: Not stated in text.

Primary reference: E. B. Olivero and N. Malumían. 2008. Mesozoic-Cenozoic stratigraphy of the Fuegian Andes, Argentina. Geologica Acta 6(1):5-18 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 90735: authorized by Austin Hendy, entered by Austin Hendy on 14.08.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to characteristic taxa mentioned in text. NOMENCLATURE: Not an authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications.
Show authors, comments, and common names
Bivalvia
 Myalinida - Inoceramidae
Inoceramus cf. urius
 Pectinida - Buchiidae
Aucellina andina, Aucellina euglypha, Aucellina radiatostriata
Aucellina radiatostriata Bonarelli and Nagera 1921 scallop
Cephalopoda
 Belemnoidea -
Belemnitida indet.
Belemnitida indet. Zittel 1895 belemnite